Re: Multiple questions on the treeview

[Jef Driesen <jefdriesen hotmail com>]

Jef Driesen wrote:
> I have create a window with a treeview to show some data to the user 
> (read-only) and some other widgets to edit the selected item. See my 
> website [1] for a screenshot.
>
> [1] http://users.telenet.be/sacn/tmp/treeview.png
>
> Now I have a few problems/question:
>
> 1. Correctly updating the treeview model?
>
> I connect to the 'changed' signal of the treeview selection, to make the 
>   other widgets show the contents of the selected row. For the 
> comboboxes, I connect to the 'changed' signal to update the treeview 
> model. But for the text entries, I connect to the 'focus_out_event' to 
> update the model (and reformat the text entry itself).
>
> This works great, except when the focus goes from a text entry to the 
> treeview. In that case, the 'changed' event of the treeview is fired 
> *before* the 'focus_out_event' of the text entry. This means the 
> treeview model does not get updated correctly and the change is lost. 
> How can I change that?

I did some testing, and noticed that the selection 'changed' signal is 
emitted *before* the 'focus_in_event' of the treeview. In my case, this 
means that when one of the text entries has the focus, and I use the 
mouse to select another row in the treeview, signals are emitted in this 
order:

on_treeview_selection_changed
on_entry_focus_out_event
on_treeview_focus_in_event

I think the 'on_treeview_selection_changed' should be fired as the last 
one. Is this a bug in gtk/gtkmm?